Microstructure and self-heating for ferritic steels under cyclic loading at low stress magnitudes
Article dans une revue avec comité de lecture
Auteur
MAREAU, CharlesGALTIER, AndréWEBER, BastienBERVEILLER, Marcel FAVIER, VéroniqueRésumé
A newmicromechanical modelling is proposed to correlate some microstructural parameters and dissipation in ferritic steels under cyclic loading.We assumed the occurrence of two dissipative mechanisms associated with anelastic and inelastic deformations, respectively. We showed that the modelling provides good qualitative prediction of the heating curves when changing the volume fraction of precipitates in ferritic steels. We highlighted the key role of the dispersion of the grain size on the local and global dissipation.
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Article dans une revue avec comité de lectureMAREAU, Charles; FAVIER, Véronique; ; ; (Elsevier, 2012)
A micromechanical model is proposed to describe the interactions between the microstructure and the dissipative deformation mechanisms in ferritic steels under cyclic loading. The model aims at optimizing the microstructure ...
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Article dans une revue avec comité de lecture; ;FAVIER, Véronique (Elsevier, 2010)
This work investigates a new micromechanical modeling of polycrystal plasticity, accounting slip bands for physical plastic heterogeneities considered as periodically distributed within grains. These intra-granular plastic ...
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Analysis of Residual Stress Relaxation Under Mechanical Cyclic Loading of Shot-Peened TRIP780 Steel Communication avec acte; ; ; ;BERVEILLER, Sophie; ; KUBLER, Regis (Materials Research Forum LLC, 2016)
Shot-peening is a popular mechanical surface treatment used in automotive and aeronautical industries to enhance life duration of mechanical parts by introducing compressive residual stresses. TRIP 780 fatigue type specimens ...
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Conférence invitée; ; ; ; ; ;BERVEILLER, Sophie; KUBLER, Regis (2017)
The microstructure and mechanical fields were studied on a cold-rolled TRIP 780 steel after conventional shot peening, and with or without pre-strain; for the first time, results were compared to numerical simulations at ...
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Communication avec acte; ; ; ;BERVEILLER, Sophie; ; KUBLER, Regis (ShotPeener ICSP13, 2017)
TRIP aided steels are used in the automotive industry due to their high strength, ductility and toughness properties. Typical parts made of TRIP steels (as engine sub-frame for instance) are submitted to cyclic loading ...